package java1;

import java.util.Scanner;

public class T1 {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
        while (sc.hasNextInt()) { 
            int a = sc.nextInt(); 
            int b = sc.nextInt();
           if(a>1000) System.out.println("a<=1000");
           else System.out.println(a + b);
        }
        sc.close(); 
    }

	}

